30444144 has 40 divisors (see below), whose sum is σ = 83275920. Its totient is φ = 9550848.

The previous prime is 30444143. The next prime is 30444163. The reversal of 30444144 is 44144403.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30444143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17839 + ... + 19470.

It is an arithmetic number, because the mean of its divisors is an integer number (2081898).

Almost surely, 2^30444144 is an apocalyptic number.

30444144 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

30444144 is an abundant number, since it is smaller than the sum of its proper divisors (52831776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30444144 is a wasteful number, since it uses less digits than its factorization.

30444144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37337 (or 37331 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 30444144 is about 5517.6212265794. The cubic root of 30444144 is about 312.2491435345.

Adding to 30444144 its reverse (44144403), we get a palindrome (74588547).

The spelling of 30444144 in words is "thirty million, four hundred forty-four thousand, one hundred forty-four".